Worksheet 517 · Skill 6
Course to steer
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You are at 312°T, 3.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.3 kn. The current sets 251°T at 0.9 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 035°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 168°T at 0.7 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 319°T, 3.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.0 kn. The current sets 239°T at 0.8 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 006°T, 3.2 nm from Mill stack, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 228°T at 2.3 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 023°T, 2.6 nm from Mill stack, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 044°T at 2.4 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 117°T, 1.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.5 kn. The current sets 194°T at 1.8 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 248°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 270°T at 2.0 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 184°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 241°T at 1.2 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 180 °T Speed over the ground: 8.6 kn Time to the mark: 33 min | No. 517001 (worked solution) |
| 2 | Course to steer: 260 °T Speed over the ground: 6.6 kn Time to the mark: 59 min | No. 517002 (worked solution) |
| 3 | Course to steer: 183 °T Speed over the ground: 5.5 kn Time to the mark: 55 min | No. 517003 (worked solution) |
| 4 | Course to steer: 284 °T Speed over the ground: 6.8 kn Time to the mark: 19 min | No. 517004 (worked solution) |
| 5 | Course to steer: 317 °T Speed over the ground: 7.0 kn Time to the mark: 21 min | No. 517005 (worked solution) |
| 6 | Course to steer: 110 °T Speed over the ground: 11.8 kn Time to the mark: 16 min | No. 517006 (worked solution) |
| 7 | Course to steer: 205 °T Speed over the ground: 8.2 kn Time to the mark: 22 min | No. 517007 (worked solution) |
| 8 | Course to steer: 311 °T Speed over the ground: 12.1 kn Time to the mark: 21 min | No. 517008 (worked solution) |